Image Preprocessing Methods to Identify Micro-cracks of Road Pavement

Hui Wang, Zhang Chen, Lijun Sun

Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai, China.

DOI: 10.4236/opj.2013.32B025                

Abstract

Standards of highway conservation and maintenance are improved gradually following the improvement of requirements of road service. Before obvious damage such as obvious cracking (block，transverse, longitudinal ) and rutting emerge, inconspicuous distress (micro-cracks, polishing, pockmarked) is generated previously. These inconspicuous distresses may provide basis and criteria for pavement preventive maintenance. Currently most of preventive conservation measures are determined by experienced experts in maintenance and repair of road after site visits. Thus method is difficult in operation, and has a certain amount of instability as it is based on experience and personal knowledge. In this paper, camera and laser were used for automated high-speed acquisition images. Methods to preprocess pavement image are compared. The pretreatment method suitable for analyze micro-cracks picture is elected, an effective way to remove shadow is also proposed.

Keywords

Pavement Distress Automatic Detection; Inconspicuous Distress; Micro-crack; Laser Light Image; Image-preprocessing

Conflicts of Interest

The authors declare no conflicts of interest.

References

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